CN213879015U - Cabinet body top can quick radiating switch board - Google Patents

Abstract

The utility model relates to a cabinet body top can quick radiating switch board, it includes the cabinet body, the louvre has been seted up at the top of the cabinet body, heat abstractor is installed at the top of the cabinet body, heat abstractor is including two trapezoidal boards of rigid coupling in cabinet body top both sides respectively, two the top rigid coupling of trapezoidal board has the horizontal plate, the perpendicular rigid coupling respectively has the riser in both sides at horizontal plate top, two the side of keeping away from each other of riser rotates respectively and is connected with first pivot, every the rigid coupling has the baffle in the first pivot, install on the horizontal plate and be used for driving two first pivots towards opposite direction pivoted actuating mechanism. This application can accelerate the radiating rate at cabinet body top. Moreover, the application provides high-precision measurement data for the terminal energy monitoring system, reflects the power quality data in real time through the display unit, and uploads the data to the background environment control system through digital communication, so that the real-time monitoring and the effective management of the running quality of the whole power distribution system are achieved.

Description

Cabinet body top can quick radiating switch board

Technical Field

The application relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet capable of quickly dissipating heat at the top of a cabinet body.

Background

At present, a microcontroller and a data acquisition module are connected with an insulation performance detection module, a mechanical performance detection module and an electrical performance detection module, and a clock module and a main controller are connected with the microcontroller to provide high-precision measurement data for a terminal energy monitoring system so as to reflect electric energy quality data in real time through a display screen. And uploading the data to a background environment control system through digital communication, so that the real-time monitoring and the effective management of the running quality of the whole power distribution system are achieved. The current of each output branch circuit is monitored in real time, and the warning value of the current abnormity of each output branch circuit can be set, so that the power failure of an electrical control system due to overload is avoided.

The related technology can refer to Chinese patent application with publication number CN110994799A, which discloses an intelligent power distribution cabinet, comprising an insulation performance detection module, a mechanical performance detection module, an electrical performance detection module, an acquisition module, a switch mechanism, a switch sensor, a microcontroller, a fuse, a protection module, a clock module, a main controller and a power supply module, wherein the insulation performance detection module, the mechanical performance detection module and the electrical performance detection module are all connected with the acquisition module; the power supply module comprises a transformer, a rectifier bridge, a first capacitor, a first light emitting diode, a first resistor, a first triode, a second light emitting diode, a second resistor, a second triode, a third triode, a second capacitor, a third diode, a fourth resistor, a third capacitor, a fifth potentiometer, a fourth capacitor and a voltage output end. The intelligent power distribution cabinet has the following beneficial effects: the circuit structure is simpler, the cost is lower, convenient maintenance, the security and the reliability of circuit are higher.

The utility model discloses a chinese utility model patent that the grant bulletin number is CN209805203U can be referred to relevant art, and it discloses a switch board convenient to heat dissipation, including the cabinet body and insulating layer, the side of the cabinet body is equipped with the air inlet window, the inside fixed mounting of the cabinet body has the mounting bracket, and is equipped with the mounting groove on the mounting bracket, the positive fixed mounting of the internal portion of cabinet has the transom, and the back fixed mounting of the cabinet body has the fan casing, and the inside fixed mounting of fan casing has radiator fan, the fixed soundproof cotton that pastes in the side of the internal portion of fan casing. The utility model discloses the cooperation of the dust cover and the air inlet window that set up is used and is made the device can also carry out the effect protected to the air inlet window when having reached the air inlet, the condition that has reduced the strong wind weather foreign matter simultaneously and blockked the air inlet window or get into the switch board, the radiating efficiency and the protect function of device have been improved, the working property of device has been improved, application scope has been enlarged, the bottom is equipped with the insulating layer and keeps apart the cabinet body with ground, avoid the high temperature on ground to conduct cabinet internal portion, application scope has been enlarged, therefore, the clothes hanger is strong in practicability, and is worth popularizing.

The mounting groove is generally used for mounting modules such as detection, control and protection.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: above-mentioned radiator fan has certain distance from the top of the cabinet body to the radiating rate at cabinet body top can not effectively be accelerated, therefore probably influences the life of some components and parts of the internal top of cabinet.

SUMMERY OF THE UTILITY MODEL

In order to accelerate the radiating rate at the top of the cabinet body, the application provides a cabinet body top can radiating switch board fast.

The application provides a pair of cabinet body top can quick radiating switch board adopts following technical scheme:

the utility model provides a cabinet body top can quick radiating switch board, includes the cabinet body, the louvre has been seted up at the top of the cabinet body, heat abstractor is installed at the top of the cabinet body, heat abstractor includes two trapezoidal boards of rigid coupling in cabinet body top both sides respectively, two the top rigid coupling of trapezoidal board has the horizontal plate, the perpendicular rigid coupling respectively in both sides at horizontal plate top has the riser, two the side of keeping away from each other of riser rotates respectively and is connected with first pivot, every the rigid coupling has the baffle in the first pivot, install on the horizontal plate and be used for driving two first pivots towards opposite direction pivoted actuating mechanism.

By adopting the technical scheme, the driving mechanism drives the two first rotating shafts to rotate towards opposite directions, and the two first rotating shafts rotate towards opposite directions to drive the two baffles to rotate, so that the heat dissipation speed of the top of the cabinet body can be increased; through setting up heat abstractor, be convenient for accelerate the radiating rate at cabinet body top.

Preferably, the driving mechanism comprises a driving motor arranged at one end of the horizontal plate and a reciprocating screw rod rotationally connected to the top of the horizontal plate; one end of the reciprocating screw rod is fixedly connected with an output shaft of the driving motor; the reciprocating screw rod is in threaded connection with a movable plate, and the movable plate is connected to the top of the horizontal plate in a sliding manner along the length direction of the cabinet body; two sets of drive assemblies for driving the two first rotating shafts to rotate towards opposite directions are mounted at the top of the moving plate, and the two sets of drive assemblies are symmetrically arranged.

Through adopting above-mentioned technical scheme, when the first pivot of needs drive rotates, the output shaft through driving motor drives reciprocal lead screw and rotates, and reciprocal lead screw rotates the drive movable plate and removes, alright drive first pivot rotation this moment under drive assembly's effect.

Preferably, each group of driving assemblies comprises a connecting rod fixedly connected to one side of the moving plate and a driving rod fixedly connected to one end, far away from the moving plate, of the connecting rod; the actuating lever is last along its circumference rigid coupling in proper order to have a plurality of spiral pieces, the through-hole has been seted up to the one end that first pivot is close to the actuating lever, a plurality of helicla flutes have been seted up in proper order along its circumference to the inner wall of through-hole, the spiral piece with the helicla flute one-to-one cooperation.

By adopting the technical scheme, the movable plate moves to drive the connecting rod to move, the connecting rod moves to drive the driving rod to move, and the driving rod drives the first rotating shaft to rotate under the action of the spiral block and the spiral groove; through setting up drive assembly, be convenient for drive first pivot and rotate.

Preferably, the top of horizontal plate is fixedly connected with the horizontal rod, and the movable plate is connected to the horizontal rod in a sliding manner along the length direction of the cabinet body.

By adopting the technical scheme, the movable plate is convenient to guide, so that the possibility that the movable plate rotates along with the lead screw can be reduced.

Preferably, one side of the baffle close to the heat dissipation holes is detachably connected with a sealing plate, and the baffle further comprises a fixing mechanism for fixing the sealing plate.

Through adopting above-mentioned technical scheme, through setting up the closing plate, be convenient for seal the junction of baffle and louvre.

Preferably, the jacks are respectively formed in the two ends of the baffle, the fixing mechanism comprises two inserting blocks fixedly connected to the two ends of the top of the sealing plate respectively, the two inserting blocks are respectively inserted into the two jacks, the top of the baffle is connected with two limiting blocks in a manner of being mutually opposite or sliding in opposite directions along the length direction of the baffle, limiting holes are respectively formed in the inserting blocks, the limiting blocks are respectively inserted into the two limiting holes, and the driving and moving assembly used for driving the two limiting blocks to move is installed at the top of the baffle.

By adopting the technical scheme, when the sealing plate needs to be fixed, the insertion block is inserted into the insertion hole by moving the sealing plate, and then the driving and moving assembly drives the two limit blocks to move back and forth, so that the two limit blocks are respectively inserted into the two limit holes, and the sealing plate can be fixed; through setting up fixed establishment, be convenient for fix the closing plate.

Preferably, the driving and moving assembly comprises a fixed frame fixedly connected to the top of the baffle and a second rotating shaft rotatably connected to the fixed frame; a hand wheel is fixedly connected to the top of the second rotating shaft, a gear is fixedly connected to the bottom of the second rotating shaft, racks are fixedly connected to the opposite inner sides of the two limiting blocks respectively, and the two racks are meshed with the gear; and the fixed frame is provided with a limiting part for limiting the second rotating shaft.

By adopting the technical scheme, when the two limiting blocks need to be driven to move, the hand wheel is rotated to drive the second rotating shaft to rotate, the second rotating shaft rotates to drive the gear to rotate, the gear rotates to drive the two racks to move, and the two racks can drive the two limiting blocks to move after moving; through setting up and driving the subassembly that moves, be convenient for drive two spacing block and remove.

Preferably, the limiting part comprises a fixed block fixedly connected to the top of the fixed frame, the fixed block is in threaded connection with an inserted bar, a through hole is formed in the side wall of the second rotating shaft, and the inserted bar can be inserted into the through hole.

Through adopting above-mentioned technical scheme, through setting up the inserted bar, be convenient for carry on spacingly to the second pivot.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the driving mechanism drives the two first rotating shafts to rotate towards opposite directions, and the two first rotating shafts rotate towards opposite directions to drive the two baffles to rotate, so that the heat dissipation speed of the top of the cabinet body can be increased; the heat dissipation device is arranged, so that the heat dissipation speed of the top of the cabinet body is increased conveniently;

2. when the sealing plate needs to be fixed, the insertion block is inserted into the insertion hole by moving the sealing plate, and then the driving and moving assembly drives the two limiting blocks to move back and forth, so that the two limiting blocks are respectively inserted into the two limiting holes, and the sealing plate can be fixed; the sealing plate is convenient to fix by arranging the fixing mechanism;

3. when the two limiting blocks need to be driven to move, the hand wheel is rotated to drive the second rotating shaft to rotate, the second rotating shaft rotates to drive the gear to rotate, the gear rotates to drive the two racks to move, and the two racks can drive the two limiting blocks to move; through setting up and driving the subassembly that moves, be convenient for drive two spacing block and remove.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a heat dissipation device according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a salient screw block and a spiral groove in the embodiment of the present application;

fig. 4 is a schematic structural view of a highlighted fixing mechanism in the embodiment of the present application.

Description of reference numerals: 1. a cabinet body; 11. heat dissipation holes; 12. a cross bar; 2. a heat sink; 21. a trapezoidal plate; 22. a horizontal plate; 23. a vertical plate; 24. a first rotating shaft; 25. a baffle plate; 251. a jack; 3. a drive mechanism; 31. a drive motor; 32. a reciprocating screw; 33. moving the plate; 34. a horizontal bar; 35. a drive assembly; 351. a connecting rod; 352. a drive rod; 353. a screw block; 354. a through hole; 355. a helical groove; 4. a sealing plate; 5. a fixing mechanism; 51. inserting a block; 511. a limiting hole; 52. a limiting block; 53. a guide bar; 54. a sliding sleeve; 55. a driving and moving assembly; 551. a fixed mount; 552. a second rotating shaft; 553. a hand wheel; 554. a gear; 555. a rack; 6. a limiting member; 61. a fixed block; 62. inserting a rod; 63. and (6) perforating.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses cabinet body top can radiating switch board fast, as shown in fig. 1 and fig. 2, including the cabinet body 1, louvre 11 has been seted up at the top of the cabinet body 1, and heat abstractor 2 is installed at the top of the cabinet body 1.

As shown in fig. 1 and fig. 2, the heat dissipation device 2 includes two trapezoidal plates 21 respectively fixedly connected to two sides of the top of the cabinet 1, the bottoms of the two trapezoidal plates 21 are connected through a cross rod 12, the cross rod 12 is fixedly connected to the top of the cabinet 1, the top of the two trapezoidal plates 21 is fixedly connected to a horizontal plate 22, the horizontal plate 22 is arranged along the length direction of the cabinet 1, the two sides of the top of the horizontal plate 22 are respectively and vertically fixedly connected to a vertical plate 23, the vertical plate 23 is square, the mutually-away sides of the two vertical plates 23 are respectively connected to a first rotating shaft 24 through a bearing in a rotating manner, the first rotating shaft 24 is arranged along the length direction of the horizontal plate 22, a baffle 25 is fixedly connected to each first rotating shaft 24, and a driving mechanism 3 for driving the two first rotating shafts 24 to rotate towards the opposite direction is installed on the horizontal plate 22. The driving mechanism 3 drives the two first rotating shafts 24 to rotate towards opposite directions, and the two first rotating shafts 24 rotate towards opposite directions to drive the two baffles 25 to rotate, so that the heat dissipation speed of the top of the cabinet body 1 can be accelerated; through setting up heat abstractor 2, be convenient for accelerate the radiating rate at cabinet body 1 top.

As shown in fig. 1 and 2, the driving mechanism 3 includes a driving motor 31 mounted at one end of the horizontal plate 22 and a reciprocating screw 32 rotatably connected to the top of the horizontal plate 22 through a bearing; one end of the reciprocating screw 32 is fixedly connected to an output shaft of the driving motor 31; a moving plate 33 is connected to the reciprocating screw rod 32 in a threaded manner, and the moving plate 33 is vertically arranged; a horizontal rod 34 is fixedly connected to the top of the horizontal plate 22, the horizontal rod 34 is arranged along the length direction of the cabinet body 1, the horizontal rod 34 penetrates through the moving plate 33, and the moving plate 33 is connected to the horizontal rod 34 in a sliding manner along the length direction of the horizontal plate 22; two groups of driving assemblies 35 for driving the two first rotating shafts 24 to rotate towards opposite directions are mounted at the top of the moving plate 33, and the two groups of driving assemblies 35 are symmetrically arranged. When the first rotating shaft 24 needs to be driven to rotate, the reciprocating lead screw 32 is driven to rotate through the output shaft of the driving motor 31, the reciprocating lead screw 32 drives the moving plate 33 to move in a rotating manner, and at this time, the first rotating shaft 24 can be driven to rotate under the action of the driving assembly 35.

As shown in fig. 2 and 3, each set of driving assemblies 35 includes a link 351 fixedly connected to one side of the moving plate 33 and a driving rod 352 fixedly connected to one end of the link 351 far from the moving plate 33; the connecting rod 351 and the driving rod 352 form a hook-shaped structure, the driving rod 352 is axially arranged along the first rotating shaft 24, a plurality of spiral blocks 353 are sequentially and fixedly connected to the driving rod 352 along the circumferential direction of the driving rod 352, a through hole 354 is formed in one end, close to the driving rod 352, of the first rotating shaft 24, the through hole 354 is cylindrical, a plurality of spiral grooves 355 are sequentially formed in the inner wall of the through hole 354 along the circumferential direction of the through hole 354, and the spiral blocks 353 are matched with the spiral grooves 355 in a one-to-one correspondence mode. The moving plate 33 moves to drive the connecting rod 351 to move, the connecting rod 351 moves to drive the driving rod 352 to move, and at the moment, the driving rod 352 drives the first rotating shaft 24 to rotate under the action of the spiral block 353 and the spiral groove 355; the driving assembly 35 is provided to drive the first rotating shaft 24 to rotate.

As shown in fig. 1 and 4, a sealing plate 4 is detachably connected to one side of the baffle 25 close to the heat dissipation hole 11, the sealing plate 4 may be a vulcanized rubber plate, and the fixing mechanism 5 is further included for fixing the sealing plate 4. Through setting up the closing plate 4, be convenient for seal the junction of baffle 25 and louvre 11. By providing the fixing mechanism 5, the sealing plate 4 is fixed conveniently.

As shown in fig. 2 and 4, two ends of the baffle 25 are respectively provided with an insertion hole 251, the fixing mechanism 5 includes two insertion blocks 51 respectively fixedly connected to two ends of the top of the sealing plate 4, the two insertion blocks 51 are respectively inserted into the two insertion holes 251, and both the insertion blocks 51 and the insertion holes 251 are square; the length direction of the baffle 25 is parallel to the length direction of the horizontal plate 22, the top of the baffle 25 is connected with two limiting blocks 52 along the length direction in a back-to-back or opposite sliding manner, the top of the baffle 25 is fixedly connected with two guide rods 53, one sides of the two limiting blocks 52 far away from each other are fixedly connected with sliding sleeves 54, and the two sliding sleeves 54 are connected with the two guide rods 53 in a sliding manner; the two insertion blocks 51 are respectively provided with a limiting hole 511, the two limiting blocks 52 are respectively inserted into the two limiting holes 511, and the top of the baffle 25 is provided with a driving component 55 for driving the two limiting blocks 52 to move. When the sealing plate 4 needs to be fixed, the insertion block 51 is inserted into the insertion hole 251 by moving the sealing plate 4, and then the driving and moving assembly 55 drives the two limiting blocks 52 to move back and forth, so that the two limiting blocks 52 are respectively inserted into the two limiting holes 511, and the sealing plate 4 can be fixed; by providing the fixing mechanism 5, the sealing plate 4 is fixed conveniently.

As shown in fig. 2 and 4, the driving and moving assembly 55 includes a fixed frame 551 fixedly connected to the top of the baffle 25 and a second rotating shaft 552 rotatably connected to the fixed frame 551 through a bearing; the fixing frame 551 is L-shaped; the second rotating shaft 552 is arranged along a direction perpendicular to the top surface of the baffle 25, the top of the second rotating shaft 552 is detachably connected with a hand wheel 553 through a bolt, a gear 554 is fixedly connected to the bottom of the second rotating shaft 552, racks 555 are respectively fixedly connected to the opposite inner sides of the two limiting blocks 52, the teeth of the two racks 555 are oppositely arranged, and the two racks 555 are both meshed with the gear 554; the fixing frame 551 is provided with a limiting member 6 for limiting the second rotating shaft 552. When the two limiting blocks 52 need to be driven to move, the hand wheel 553 is rotated to drive the second rotating shaft 552 to rotate, the second rotating shaft 552 rotates to drive the gear 554 to rotate, the gear 554 rotates to drive the two racks 555 to move, and the two racks 555 can drive the two limiting blocks 52 to move; through setting up and driving the subassembly 55, be convenient for drive two stopper 52 and remove.

As shown in fig. 2 and 4, the position-limiting member 6 includes a fixing block 61 vertically fixed on the top of the fixing frame 551, the fixing block 61 is screwed with an insertion rod 62, the insertion rod 62 is radially disposed along the second rotating shaft 552, a through hole 63 is formed in a side wall of the second rotating shaft 552, and the insertion rod 62 can be inserted into the through hole 63. The second rotating shaft 552 is limited conveniently by the insertion rod 62.

The implementation principle of the power distribution cabinet capable of rapidly dissipating heat at the top of the cabinet body in the embodiment of the application is as follows: the reciprocating screw rod 32 is driven to rotate by an output shaft of the driving motor 31, the reciprocating screw rod 32 drives the moving plate 33 to move, the moving plate 33 drives the two connecting rods 351 to move, the two connecting rods 351 drive the two driving rods 352 to move, at the moment, the two driving rods 352 drive the two first rotating shafts 24 to rotate towards opposite directions under the action of the spiral block 353 and the spiral groove 355, and the two first rotating shafts 24 rotate towards opposite directions to drive the two baffles 25 to rotate, so that the heat dissipation speed of the top of the cabinet body 1 can be increased; through setting up heat abstractor 2, be convenient for accelerate the radiating rate at cabinet body 1 top.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a cabinet body top can quick radiating switch board, includes the cabinet body (1), its characterized in that: louvre (11) have been seted up at the top of the cabinet body (1), heat abstractor (2) are installed at the top of the cabinet body (1), heat abstractor (2) are including respectively rigid coupling in two trapezoidal boards (21) of the cabinet body (1) top both sides, two the top rigid coupling of trapezoidal board (21) has horizontal plate (22), the perpendicular rigid coupling of both sides difference at horizontal plate (22) top has riser (23), two the side of keeping away from each other of riser (23) rotates respectively and is connected with first pivot (24), every the rigid coupling has baffle (25) on first pivot (24), install on horizontal plate (22) and be used for driving two first pivot (24) towards opposite direction pivoted actuating mechanism (3).

2. The power distribution cabinet capable of dissipating heat quickly at the top of the cabinet body according to claim 1, characterized in that: the driving mechanism (3) comprises a driving motor (31) arranged at one end of the horizontal plate (22) and a reciprocating screw rod (32) rotationally connected to the top of the horizontal plate (22); one end of the reciprocating screw rod (32) is fixedly connected with an output shaft of the driving motor (31); a moving plate (33) is connected to the reciprocating screw rod (32) in a threaded manner, and the moving plate (33) is connected to the top of the horizontal plate (22) in a sliding manner along the length direction of the cabinet body (1); two sets of drive assemblies (35) that are used for driving two first pivot (24) to rotate towards opposite directions are installed at the top of movable plate (33), and two sets of drive assemblies (35) symmetry sets up.

3. The power distribution cabinet capable of dissipating heat quickly at the top of the cabinet body according to claim 2, characterized in that: each group of driving assemblies (35) comprises a connecting rod (351) fixedly connected to one side of the moving plate (33) and a driving rod (352) fixedly connected to one end, far away from the moving plate (33), of the connecting rod (351); the utility model discloses a drive rod, including actuating lever (352), first pivot (24), through-hole (354) have been seted up to its one end that circumference in proper order rigid coupling has a plurality of spiral pieces (353) on actuating lever (352), a plurality of helicla flutes (355) have been seted up in proper order along its circumference in the inner wall of through-hole (354), spiral piece (353) with helicla flute (355) one-to-one cooperation.

4. The power distribution cabinet capable of dissipating heat quickly at the top of the cabinet body according to claim 2, characterized in that: the top rigid coupling of horizontal plate (22) has horizontal pole (34), moving plate (33) slide along the length direction of the cabinet body (1) and connect in horizontal pole (34).

5. The power distribution cabinet capable of dissipating heat quickly at the top of the cabinet body according to claim 1, characterized in that: one side of the baffle (25) close to the heat dissipation holes (11) is detachably connected with a sealing plate (4), and the baffle further comprises a fixing mechanism (5) for fixing the sealing plate (4).

6. The power distribution cabinet capable of dissipating heat quickly at the top of the cabinet body according to claim 5, wherein: jacks (251) are respectively formed in two ends of the baffle (25), the fixing mechanism (5) comprises two inserting blocks (51) fixedly connected to two ends of the top of the sealing plate (4) respectively, the two inserting blocks (51) are respectively inserted into the two jacks (251), the top of the baffle (25) is connected with two limiting blocks (52) in a back-to-back or opposite sliding mode along the length direction of the top of the baffle, two limiting holes (511) are respectively formed in the inserting blocks (51), the two limiting blocks (52) are respectively inserted into the two limiting holes (511), and a driving and moving assembly (55) for driving the two limiting blocks (52) to move is installed at the top of the baffle (25).

7. The power distribution cabinet capable of dissipating heat quickly at the top of the cabinet body according to claim 6, wherein: the driving and moving assembly (55) comprises a fixed frame (551) fixedly connected to the top of the baffle plate (25) and a second rotating shaft (552) rotatably connected to the fixed frame (551); a hand wheel (553) is fixedly connected to the top of the second rotating shaft (552), a gear (554) is fixedly connected to the bottom of the second rotating shaft (552), racks (555) are fixedly connected to the opposite inner sides of the two limiting blocks (52) respectively, and the two racks (555) are meshed with the gear (554); the fixed frame (551) is provided with a limiting piece (6) used for limiting the second rotating shaft (552).

8. The power distribution cabinet capable of dissipating heat quickly at the top of the cabinet body according to claim 7, characterized in that: the limiting piece (6) comprises a fixed block (61) fixedly connected to the top of the fixing frame (551), an inserting rod (62) is connected to the fixed block (61) in a threaded mode, a through hole (63) is formed in the side wall of the second rotating shaft (552), and the inserting rod (62) can be inserted into the through hole (63).

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